Artificial intelligence portable suction device having a catheter reel

ABSTRACT

Disclosed is a suction device. The suction device includes a sensor unit which measures a breathing condition of a patient, a tube unit which is inserted into a bronchus of the patient in order to suck foreign material generated in the bronchus of the patient, when the values measured by the sensor unit exceeds a predetermined reference value, and a control unit which controls to drive the tube unit based on the measured value received from the sensor unit. According to the present invention, there is provided the suction device which is automatically operated by directly determining whether foreign material is generated in the bronchus of the patient.

RELATED APPLICATIONS

This application claims priority to Korean Patent Application No.10-2014-0023985, filed on Feb. 28, 2014 in the Korean IntellectualProperty Office, the entire disclosure of which is incorporated hereinby reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a suction device, and more specificallyto an artificial intelligence type suction device which sucks in byautomatically determining an occurrence of foreign material in a user'srespirator and inserting a catheter.

2. Description of the Related Art

A medical suction device is a medical foreign material suction devicewhich sucks in and removes by force into a container foreign materialssuch as blood, saliva, vomitus and secreta that are generated from aninside of a patient's body while operating on the patient in hospitals.In general, patients with impaired mobility at home or hospital have asuction device mounted constantly for a guardian or nurse to drainforeign material out of the trachea or surgical site.

A conventional suction device includes a suction unit for suckingforeign material or other waste, a containment unit for containing theforeign material, a driving unit for applying a suction force to thesuction device and a suction tube through which waste flows. However,the conventional suction device needs an improvement in that the noiseis loud and operation by the patient or guardian is necessary.

In addition, since foreign materials may be generated during sleep toblock the trachea, the nurse, carer or guardian should operate thesuction device from time to time. However, the conventional suctiondevice is inconvenient since the foreign material in the patient's bodyshould be frequently removed according to condition or reaction from thepatient night and day. In addition, since expenses for the cathetersthat should be replaced due to contamination whenever foreign materialis removed are high, a method which is capable of continuously using thecatheter is required.

Relating to this, Korean Patent Registration No. 10-1403658 discloses amedical suction catheter including an on-off valve used for suckingforeign material in the body of the patient, and Korean PatentRegistration No. 10-1279451 discloses a medical suction device which canautomatically make sewage disposal of extracts. The techniques disclosedin the above patents have advantages such as being stable and hygienicin operation. However, these patents fail to disclose a technicalconfiguration that provides convenience to the patient with impairedmobility.

Therefore, there is a need to develop a suction device for removingforeign material from the patient from time to time and enhancingconvenience and work efficiency of the guardian or nurse in order toimprove the health of patient with impaired mobility.

SUMMARY OF THE INVENTION

In consideration of the above-mentioned circumstances, it is an objectof the present invention to provide a suction device which sucks foreignmaterial by detecting the foreign material in a patient's bronchusitself to automatically insert the catheter into the patient.

In order to achieve the above object, a suction device according to oneembodiment of the present invention includes a drive unit, an inputunit, a sensor unit, a tube unit, a control unit, and a storage unit.The drive unit is disposed on the bottom of the suction device and isconfigured to periodically pump, the input unit is disposed on a frontof the suction device and is configured to input setting values forcontrol, the sensor unit is configured to measure a breathing conditionof a patient, the a tube unit is configured to be inserted into abronchus of a patient to suck foreign material generated in the bronchuswhen the foreign material is generated in the bronchus, and move out ofthe bronchus, the control unit is configured to receive the settingvalues and the measured results respectively transmitted from the inputunit and the sensor unit and control the drive unit based on thereceived setting values and measured results; and the storage unit sucksand stores foreign material and stores and supplies saline water.

In one embodiment, the drive unit may include a brushless DC motor (BLDCmotor) which sucks and injects air by periodical pumping, and a driverwhich is connected to the BLDC motor at a distance and receives acontrol signal transmitted from the control unit to control the BLDCmotor.

In one embodiment, the input unit may include: a breathing informationdisplay window in which a user's respiration rate per minute, a singlerespiratory air volume showing a volume breathed by a user at one timeand breathing information showing respiration rate per hour aredisplayed; and a device setting window in which setting buttons foroperating a simple respiratory function and suction are provided.

In one embodiment, the sensor unit may include: a mass flow meter (MFMsensor) which is configured to detect a daily breathing conditionshowing a patient's breathing pattern and a volume of exhaled gas for apredetermined time, and transmits the detected results to the controlunit, and measure a mass of a patient's exhaled gas and the dailybreathing condition and transmit the measured results of the dailybreathing condition to the control unit.

In one embodiment, the control unit may be configured to analyze thedaily breathing condition received from the MFM sensor, and if it isdetermined that foreign material is generated in the body of thepatient, control the drive unit to suck the foreign material, andanalyze the daily breathing condition received from the MFM sensor, andif it is determined that the user's breathing condition is irregular anddifficult, control to drive the simple respiratory function.

In one embodiment, the tube unit may include: a catheter reel and a tubecover, and the catheter reel may include: a catheter which has a tubestructure to suck foreign material; a screw frame which includes aplurality of protruded threads formed on an outer circumference thereofon which the catheter is reeled, and is configured to push or pull thecatheter depending on the rotation direction thereof; a catheter reelcase which includes a plurality of holes into which saline water forcleaning the catheter surface is injected formed therein, and houses thecatheter and the screw frame; and a stepping motor configured to rotatethe screw frame, wherein the tube cover may be formed outside of thecatheter so that the catheter provides passages which are connected to afilter, the MFM sensor, a saline water container and a nebulizer betweenthe bronchus and catheter reel.

In one embodiment, the suction device may further include: a motor coverwhich encloses the BLDC motor to prevent a noise of the BLDC motor frombeing leaked to an outside and reduce a vibration of the BLDC motor.

In one embodiment, the tube unit may further include: a T tube, and theT tube may include: a first cuff which is formed on an upper portion,and is inflated by air to expand the bronchus; a second cuff which isformed adjacent to and below the first cuff, and is inflated by air whenthe first cuff is deflated to expand the bronchus; a third cuff which isconnected to the first cuff so as to flow air; a second tube which isconnected to the second cuff so as to flow air; a first tube which sucksforeign material formed in the upper portion of the first cuff; and afourth tube which, when the first cuff is deflated to make the secondcuff inflate so that foreign material is formed in the upper portion ofthe second cuff, sucks the foreign material.

In one embodiment, the first and second cuffs may be alternatelyinflated and deflated to expand the bronchus of the user.

In one embodiment, the suction device may further include: a filterwhich prevents moisture from being penetrated into the sensor unit, andwaste from being entered into the drive unit.

According to the present invention, since the suction device sucksforeign material only when an occurrence of foreign material is detectedby determining the patient's daily breathing condition through a massflow meter (MFM) unlike the conventional suction device, it is possibleto reduce the pain of the patient and power consumption, and it allowsuse for an unconscious patient without a guardian.

In addition, since the motor cover provided in the suction deviceaccording to the present invention covers the brushless DC motor (BLDCmotor) to prevent noises and vibrations generated from the BLDC motorfrom being leaked to an outside, a user environment that fits patientsor infants who react sensitively to the ambient environment may beachieved.

Further, by pushing the emergency button provided in the suction deviceaccording to the present invention, the patient can call the guardian ina situation in which the suction device is not operating.

Further, it is possible to protect the patient by pushing the emergencybutton provided in the suction device according to the present inventionwhen the device is operating abnormally, and the patient can call theguardian by pushing an emergency button connected to the suction devicewhen the suction device is not operating.

Further, since the MFM sensor used in the present invention directlymeasures the invariable mass, it is possible to effectively measure gaswith a low flow rate, and accurately measure the mass of flowing gas bydirectly measuring without the need to measure the volume or pressure ofgas.

In addition, since the MFM sensor has no device generating a vibrationduring measuring the mass of gas, it is possible to increase the user'sconvenience during using the suction device according to the presentinvention.

Furthermore, since the suction device according to the present inventionis provided with a simple respiratory function, it is possible toimprove the pulmonary function through the simple respiratory functionif the user's breathing condition is irregular or difficult, and savethe user's life in the case of an emergency situation.

In addition, according to the present invention, improvement andtraining of a user's pulmonary function are possible through a functionprovided for the simple respiratory function whereby the user'sinhalation time is subjected to increase gradually.

Further, according to the present invention, it is possible to reducethe maintenance costs since reuse is possible through saline irrigationto the catheter which has conventionally been the cause of highmaintenance costs due to disposable single use for sanitary reasonspresent in the art.

Further, inflammation or infection of a user's bronchus may be minimizedas the first and second cuffs of the tube unit provided in the suctiondevice according to the present invention expand and contractalternately, and the tube unit has no need of frequent replacement,thereby user's convenience may be increased.

Further, by using the communication device such as the Bluetooth moduleor WiFi module provided in the suction device according to the presentinvention, the control unit can send a warning message to the guardianor medical team in the case of an abrupt change of the daily breathingcondition of the user.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and other advantages of thepresent invention will be more clearly understood from the followingdetailed description taken in conjunction with the accompanyingdrawings, in which:

FIG. 1 is an exploded perspective view showing the structure of asuction device according to one embodiment of the present invention;

FIG. 2 is a perspective view showing the structure of a tube unitincluded in the suction device according to one embodiment of thepresent invention in FIG. 1;

FIGS. 3 and 4 are exploded perspective views showing the structures of acatheter reel in FIG. 2;

FIGS. 5 and 6 are exploded perspective views showing the operation inwhich the catheter reel of FIG. 2 is inserted into a bronchus through aT tube;

FIG. 7 is a perspective view showing the structure of the T tube thatmay be connected to the tube unit included in the suction deviceaccording to one embodiment of the present invention in FIG. 1;

FIG. 8 is an exploded perspective view showing the structure of thesuction device according to one embodiment of the present invention inFIG. 1 as seen from a different direction thereof;

FIG. 9 is a view showing an example of an operation screen displayed onan input unit of the suction device according to one embodiment of thepresent invention in FIG. 1;

FIG. 10 is an exploded perspective view showing a second storage unitformed in a lower part of the suction device according to one embodimentof the present invention in FIG. 1; and

FIG. 11 is a block diagram showing a method of operating the suctiondevice according to the present invention.

DETAILED DESCRIPTION OF THE INVENTION

Hereinafter, the present invention will be described in detail withreference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing the structure of asuction device according to one embodiment of the present invention.Referring to FIG. 1, a suction device 10 according one embodiment of thepresent invention includes a cover unit 20, a driving unit 30, a storageunit 40, a sensor unit 50, a vacuum gauge 60, a nebulizer 70, an inputunit 80, a filter 90, a scale 100, a tube unit 110 and a control unit120.

The cover unit 20 includes a front cover 20 a, a rear cover 20 b and amotor cover 20 c. The front cover 20 a is provided with the input unit80, and a switch for turning on and off the power of the suction device10 on the top thereof.

The driving unit 30 includes a driver 30 a, a brushless DC motor (BLDCmotor) 30 b and a solenoid valve 30 c. The storage unit 40 includes asaline water container 40 a and a suction container 40 b. The sensorunit 50 includes a mass flow meter (MFM) sensor 50 a.

The rear cover 20 b is disposed on a rear of the suction device 10 andis coupled with the front cover 20 a to protect the inner components ofthe suction device 10, while preventing noises from being leaked to anoutside and external contaminants from entering therein.

The motor cover 20 c is formed in a double-case structure with a spongeattached on the center thereof. The double-case structure is formed toabsorb noise and reduce vibration generated from the driving unit 30.The motor cover 20 c may reduce the stress for a user who uses thesuction device 10 at all times due to the noise and vibration.

The driver 30 a sends a signal received from the control unit 120 tocontrol the BLDC motor 30 b. The driver 30 a is connected to the BLDCmotor 30 b with a cable at a distance to reduce the effects of heat andnoise from the BLDC motor 30 b, and is formed at the outside of themotor cover 20 c.

The BLDC motor 30 b is connected to the driver 30 a so as to stably andperiodically pump. The BLDC motor 30 b is mounted on a lower end of thesuction device 10 and provides power for suction of foreign material inthe user's body and the respiration of the user. In the presentinvention, the BLDC motor 30 b is used as the motor for driving thesuction device 10.

Since the BLDC motor 30 b, unlike the conventional AC motor, can easilychange the pressure desired by the user, as well as a flow rate (NL/m)and driving cycle of the motor by increasing or decreasing an electriccurrent, the suction device 10 according to the present invention canmake selective suction driving possible only when foreign material isgenerated, without making continuous suction driving regardless ofwhether there is foreign material or not.

Further, the BLDC motor 30 b has technical advantages such as excellentheat resistance, decreased noise, as well as no arc generationespecially at the time of on/off. Therefore, not only is the motor lifeincreased by about three times that of an AC motor but also it may bemade in a small size.

Meanwhile, in one embodiment of the present invention, awaste-preventing filter may be mounted on the driving unit 30 to preventcontamination by the waste entering in backflow through a catheter 113a.

The solenoid valve 30 c is provided with a bar for blocking the passagein an inner passage thereof, and when an electric current is applied tothe coil provided in the solenoid valve 30 c, the cylindrical metal rodin the coil is moved upward by an electromagnetic force to push the barupward, so that the solenoid valve 30 c is opened.

Meanwhile, when the supply of the electric current to the coil is cutoff to make the cylindrical metal rod move downward, the bar descends bygravity to close the valve.

When inhaling foreign material, the control unit 120 controls thesolenoid valve 30 c to be closed, so that air including the oxygen beingsupplied to the user is prevented from being sucked into the suctiondevice 10 again.

The solenoid valve 30 c may be connected to all of the MFM sensor 50 a,the saline water container 40 a and the suction container 40 b, or maybe formed into three independent valves connected respectively to theMFM sensor 50 a, the saline water container 40 a and the suctioncontainer 40 b.

For convenience of the description, the present invention will bedescribed by dividing into the first to third solenoid valves 30 cconnected respectively to the MFM sensor 50 a, the saline watercontainer 40 a and suction container 40 b.

The storage unit 40 includes the saline water container 40 a and thesuction container 40 b. The saline water container 40 a is filled withsaline water, and is fabricated in a proper size so as to secure spacefor the scale 100 in the lower portion thereof. The saline watercontainer 40 a includes its own motor so as to send saline water beforeinhaling foreign material to make the foreign material easily inhalable.The saline water container 40 a may be detachably attached for theexchange and cleaning of saline water.

The saline water container 40 a is provided with the scale 100 and asmall motor in the lower portion thereof. The scale 100 constantlymeasures a weight of saline water in the saline water container 40 a,and if the weight is decreased from a predetermined value, sends asignal to the control unit 120. The control unit 120 receives the signaland indicates a saline water supply signal through the input unit 80.

The saline water container 40 a is connected to the first solenoid valve30 c. Thus, the first solenoid valve 30 c is opened before foreignmaterial is inhaled, and the saline water in the saline water container40 a is mixed with foreign material inside the user's bronchus toincrease the fluidity of foreign material.

In addition, the saline water container 40 a is connected to thecatheter 113 a to be inserted into the bronchus of the user, and pumpssaline water into the catheter 113 a by using its own motor, so as tosterilize and clean the catheter 113 a.

The suction container 40 b is formed inside the side of the suctiondevice 10 and stores foreign material sucked in. The scale 100 isdisposed in the lower portion of the suction container 40 b. The suctioncontainer 40 b is formed in a suitable volume which is large enough tosecure a space for the scale 100. The suction container 40 b may bedetachably attached for treatment and cleaning of foreign materials.

The suction container 40 b is coupled with the second solenoid valve 30c. Thus, if the fluidity of foreign material is increased by the salinewater in the saline water container 40 a, the first solenoid valve 30 cis closed. Foreign material is sucked in with the second solenoid valve30 c opened.

When foreign material is sucked in, the second solenoid valve 30 c isclosed, and the third solenoid valve 30 c connected to the MFM sensor 50a is opened. The sensor unit 50 includes the MFM sensor 50 a.

The MFM sensor 50 a is mounted on the side of the BLDC motor 30 b, andsince it has a small size and weight, the effect on the whole weight ofthe suction device 10 is insignificant. The MFM sensor 50 a makes themass of gas as a reference of measuring. Since the MFM sensor 50 adirectly measures an invariable mass, it is possible to exactly detectthe flow rate of gas without requiring a complicated calculation.

Further, the MFM sensor 50 a may effectively measure the gas with a lowflow rate, and since the sensor is not configured to measure the volumeor pressure of gas, it is possible to exactly measure the mass offlowing gas. In addition, since the MFM sensor 50 a has no devicegenerating a vibration during measuring the mass of gas, it is possibleto increase the user's convenience during using the suction device 10.

The MFM sensor 50 a can measure the mass of a variety of gases such asCO₂, Ar, methane, hydrogen, nitrogen, or the like. Specifically, bydetecting the mass of CO₂ from the respiration of a patient who uses thesuction device 10, and measuring complex data such as user's bloodcirculation, exhalation, inhalation, vital lung capacity and pulmonaryfunction, it is possible to determine the condition of the user.

Thus, since the suction device 10 is provided with the MFM sensor 50 a,it is possible to secure information on the unstable breathing conditiondue to aggravation of a patient's physical condition. Further, the MFMsensor 50 a can measure information on a patient's daily breathingcondition as well. Herein, daily breathing condition informationincludes information on the general state of a user's breathingcondition such as the mass of air the user breathes in and out(inhalation mass and exhalation mass) or the flow rate and therespiration rate per minute.

Meanwhile, if foreign material is generated in the user's bronchus, themass or flow rate of the air exhaled by the user becomes different. TheMFM sensor 50 a detects values of the changed user's inhalation mass,exhalation mass or the flow rate and the results of the respiration rateper minute, and sends to the control unit 120. The control unit 120 candetermine such a changed state depending on the values detected by theMFM sensor 50 a.

Meanwhile, in one embodiment of the present invention, a pressure sensorsuch as a sound pressure sensor that measures the size of user's groanmay be used instead of using the MFM sensor 50 a. Commonly, a patientwho feels uneasy due to foreign material generated in his bronchusgroans unwittingly and in the case of using a sound pressure sensor, thelevel of the patient's groan is detected by the MFM sensor 50 a and sentto the control unit 120, so that it is possible to control taking thepatient's subjective condition into consideration.

Meanwhile, in one embodiment of the present invention, it is preferablethat the sensor unit 50 is provided with a filter for preventingmoisture from entering into the sensor unit 50.

Preferably, the vacuum gauge 60 is mounted on the front of the frontcover 20 a in order to show the suction pressure of the suction device10. If the suction pressure of the suction device 10 increasesabnormally, it could damage the respiratory organ of the user.Therefore, it is preferable to mount the vacuum gauge 60 on the front soas to confirm whether there is normal pressure or not. Meanwhile, in oneembodiment of the present invention, it is preferable that an analogvacuum gauge that is safe and has less error is used for the vacuumgauge 60.

The nebulizer 70, which is mounted outside of the side of the suctiondevice 10, provides humidity to the patient's trachea if the user hasdifficulty in breathing, so as to stabilize the breathing condition ofthe user.

The input unit 80 is provided with a panel-type display, and it ispreferable that a plurality of buttons are arranged at a position inwhich the input unit 80 is disposed so that selection of respirationsteps by age is possible. Since the input unit 80 is embodied in a touchpanel type display, the user can select intuitively, thereby it has anadvantage that there is no need to pay extra attention to thedescription of the operating method that is not easy to understand.

The filter 90 is mounted on the front of the saline water container 40 ato purify the air entering into the body of the user.

The scales 100 are mounted below the saline water container 40 a and thesuction container 40 b to measure the weights of foreign materials andsaline water in the saline water container 40 a and the suctioncontainer 40 b.

When the measured value of the scale 100 installed below the salinewater container 40 a is less than a predetermined reference value, thescale 100 sends an underweight signal representing underweight of thesaline water to the control unit 120, and the control unit 120 outputs asaline water replenish request message through a touch panel typedisplay or speaker of the input unit 80.

Meanwhile, when the measured value of the scale 100 installed below thesuction container 40 b exceeds a predetermined reference value, thescale 100 sends an overweight signal representing overweight of thesaline water to the control unit 120, and the control unit 120 outputs aforeign material deplenish request message through the touch panel typedisplay or speaker of the input unit 80.

The tube unit 110 is connected to the outside of the suction device 10to suck in foreign material generated in the bronchus of the user.

The control unit 120 is mounted on the driver 30 a. The control unit 120analyzes the daily breathing condition information received from the MFMsensor 50 a, and sends a signal for driving the BLDC motor 30 b by thedriver 30 a depending on the analysis results. The BLDC motor 30 bstarts pumping through the signal received from the driver 30 a, and thetube unit 110 sucks in foreign material generated in the bronchus of theuser.

FIG. 2 is a perspective view showing the structure of the tube unitincluded in the suction device of FIG. 1. Referring to FIG. 2, the tubeunit 110 includes a catheter reel 113 and a tube cover 114. The catheterreel 113 includes a catheter 113 a, a screw frame 113 b, a catheter reelcase 113 c, a stepping motor 113 d, and a waste can 41.

The catheter 113 a is reeled between protruded threads of the screwframe 113 b, and moves out of the catheter reel 113 or returns into thecatheter reel 113 again depending on the rotation direction of the screwframe 113 b.

That is, when the screw frame 113 b coupled with the stepping motor 113d rotates by the rotation of the stepping motor 113 d, the threadsformed in the catheter reel case 113 c are meshed with the screw frame113 b to move in different (i.e. forward and reverse) directionsdepending on the rotation direction of the stepping motor 113 d.

Thus, in the state in which the catheter 113 a is reeled betweenprotruded threads of the screw frame 113 b, and tensile and frictionalforces are applied between the catheter 113 a and the screw frame 113 b,when the screw frame 113 b rotates by the rotation of the stepping motor113 d, the catheter 113 a is moved in the rotation direction by thetensile and frictional forces applied thereto depending on the rotationdirection of the screw frame 113 b.

One end of the catheter 113 a is disposed in the tube cover 114, and theother end is connected to the waste can 41 passing through the catheterreel 113. In addition, the tube cover 114, except portions connected tothe catheter reel 113 and directed to the bronchus, has four protrudedopenings formed on outside so as to be respectively coupled with the MFMsensor 50 a, the saline water container 40 a, the nebulizer 70 and afilter 150.

Saline water moves into the catheter 113 a through the protruded openingconnected to the saline water container 40 a, so as to sterilize anddisinfect the inside of the catheter 113 a and remove foreign materials.

In addition, three saline water hoses connected to the catheter reelcase 113 c transport saline water injected from the saline watercontainer 40 a to sterilize and clean the outer surface of the catheter113 a in the catheter reel case 113 c and the screw frame 113 b.

The filter 150 functions to purify air inletting from the outside.Alternately, after separating the filter 150 from the tube cover 114, anartificial respirator may be installed in the protruded openingconnected to the filter 150. Thus, when a problem with the respirator ofthe patient has occurred during suction, the user may separate thefilter 150 from the tube cover 114 and then connect the artificialrespirator thereto so as to have the patient's respiratory functionrecovered.

Meanwhile, the MFM sensor 50 a is connected to the front portion of thecatheter 113 a to measure the mass flow of the gas exhaled by thepatient, and the control unit 120 analyzes the measured value receivedfrom the MFM sensor 50 a to determine the bronchus condition of thepatient, and based on the analysis results, the stepping motor 113 d isdriven to insert the catheter 113 a into the patient's bronchus or drawit out of the patient's bronchus.

FIGS. 3 and 4 are exploded perspective views showing the structure ofthe catheter reel 113 included in the tube unit 110. Referring to FIGS.3 and 4, the catheter reel 113 includes the catheter 113 a, the screwframe 113 b, the stepping motor 113 d and the catheter reel case 113 c.

The catheter 113 a may be formed of innoxious silicon, rubber, orpolymer having elasticity. The catheter 113 a is reeled between theprotruded threads of the screw frame 113 b to be fixed thereto by thefrictional and tensile forces.

The stepping motor 113 d is coupled with the screw frame 113 b, so as tobe rotated by the rotation of the stepping motor 113 d.

The stepping motor 113 d may be rotated at minute angles, so as togently insert the catheter 113 a into the bronchus of the patientwithout damage to the bronchus. That is, since individual bronchi aredifferent from person to person, when using the stepping motor 113 d, itis possible to prevent or minimize a damage to the bronchus byindividually adjusting and setting the depth of the catheter 113 ameeting the bronchus of each patient.

The catheter 113 a moves into the bronchus by the forwardly rotatingstepping motor 113 d to suck in foreign material, and is reeled onto thescrew frame 113 b and pulled by the reversely rotating stepping motor113 d in a direction opposite to the sucking.

During such a process, the surface of the catheter 113 a is contaminatedby foreign materials in the bronchus. In order to remove the foreignmaterials, the lower portion of the catheter reel case 113 c is providedwith three holes into which saline water hoses are inserted.

Referring to FIG. 2 and FIG. 3, when injecting saline water through theholes formed in the catheter reel case 113 c, the injected saline watersterilizes and cleans the foreign materials remaining in the catheter113 a and the screw frame 113 b. Further, in order to sterilize andclean the foreign materials existing in the catheter 113 a, saline watermoves to the waste can 41 passing through the catheter 113 a.

Referring to FIG. 4, the screw frame 113 b includes a plurality ofprotruded threads having a substantially rectangular cross-sectionformed on the outer circumference thereof, and the catheter 113 a isreeled between the protruded threads. Further, the catheter 113 a, thescrew frame 113 b, the catheter reel case 113 c and the stepping motors113 d are respectively attached by an easy to assemble and detachstructure, to effectively clean away the foreign materials.

FIGS. 5 and 6 are exploded perspective views showing an operation inwhich the catheter reel 113 is inserted into the bronchus through a Ttube 151. Referring to FIGS. 5 and 6, the sensor unit 50 detects thepatient's daily breathing condition changed by the foreign materials inthe bronchus, and the control unit 120 controls to drive the steppingmotor 113 d based on the detected results.

When the stepping motor 113 d rotates, the catheter 113 a is insertedinto the patient's bronchus through the T tube 151. At this time, thecatheter 113 a is gently inserted by the minutely rotating steppingmotor 113 d so as to prevent a damage do the bronchus of the patient. Atthis time, various types of T tube 151 suiting the patient may be usedbased on the condition of the patient.

In addition, the control unit 120 injects saline water in the storageunit 40 through the catheter 113 a, so that the foreign materialsadsorbed to the bronchus are changed into a colloidal state which islikely to be detached. At this time, the control unit 120 controls todrive the BLDC motor 30 b to suck the foreign materials in an easilysuckable state through the catheter 113 a.

After the catheter 113 a is inserted into the bronchus to suck in theforeign materials, it is reeled onto the screw frame 113 b by thereversely rotating stepping motor 113 d to move out of the bronchus.

When the catheter 113 a that was inserted into the bronchus is reeledonto the screw frame 113 b, saline water is injected by pumping of theBLDC motor 30 b through the holes formed outside of the catheter reelcase 113 c to clean the outside of the catheter 113 a.

In addition, saline water is also injected into the catheter 113 a bythe pumping of the BLDC motor 30 b to clean the foreign materialremaining in the catheter 113 a as well.

As described above, according to the present invention, by cleaning theinside and outside of the catheter 113 a, it is possible to preventdamage to the bronchus due to contamination of the catheter 113 a.Further, by maintaining and managing the catheter 113 a, which isconventionally only disposably used for sanitary reasons, in a statereusable for at least one day, it is possible to reduce costs arisingfrom frequent replacement of the catheter 113 a.

FIG. 7 is a perspective view showing the structure of the T tube thatmay be connected to the tube unit included in the suction device of FIG.1.

Referring to FIG. 7, the T tube 151 includes a first cuff 151 a, asecond cuff 151 b, a first tube 151 c, a second tube 151 d, a third tube151 e, a fourth tube 151 f and a fifth tube 151 g.

The T tube 151 is connected to the suction device 10, and includes thefirst and second cuffs 151 a and 151 b. The T tube 151, which is a tubefor tracheostomy, is disposed inside the user's bronchus passing throughthe user's neck. The first and second cuffs 151 a and 151 b of the Ttube 151 are inflated by syringe or air injector in the user's bronchusto perform the function of expanding the inside of the bronchus.

The first and second cuffs 151 a and 151 b are inflated one afteranother at a predetermined interval of time in the user's bronchus.Meanwhile, the first and second cuffs 151 a and 151 b are inflated anddeflated alternately one after another at the upper and lower positions.The reason is that, if the first and second cuffs 151 a and 151 b arecontinuously maintained in an inflated state, inflammation or infectionmay occur in the bronchus.

Thus, in the present invention, it is possible to prevent an occurrenceof the inflammation or infection in the bronchus by inflating anddeflating the first and second cuffs 151 a and 151 b one after anotherat an interval of time.

Meanwhile, in order to inflate the first and second cuffs 151 a and 151b alternately one after another, the third tube 151 e and the secondtube 151 d are independently connected to the first and second cuffs 151a and 151 b.

Specifically, after a predetermined time has elapsed from when the firstcuff 151 a is inflated, air is drawn out using the third tube 151 e, andair is inlet into the second cuff 151 b to inflate it by using thesecond tube 151 d. By repeatedly performing the above-describedoperation at a predetermined interval of time, the possibility ofcausing inflammation or infection to the user's bronchus is reduced, anda need for the user to exchange the T tube 151 frequently is removed,such that convenience may be increased.

Meanwhile, in order to reduce a load applied to the neck of the user, itis preferable that, with a long tube being firstly connected, the long Ttube 151 is connected to the tubes of the suction device 10.

Also, the long T tube is provided with the first tube 151 c and thefourth tube 151 f therein, which extend outward from the suction device10 and reach the bronchus of the user.

Meanwhile, when the MFM sensor 50 a detects the user's daily breathingconditions such as the respiration rate per minute, as well as the massand flow rate of exhaled gas and sends a signal representing thedetected results to the control unit 120, then the control unit 120determines the patient's condition based on the received signal. If itis determined that there is a problem with the patient's breathingcondition depending on the analysis of the daily breathing condition,the control unit 120 controls to drive the BLDC motor 30 b to supplyoxygen through the third tube 151 e.

Further, in one embodiment of the present invention, by providing thecontrol unit 120 with wireless communication devices such as a Bluetoothmodule or WiFi module, it is possible to provide simple artificialrespiration through the fifth tube 151 g when the daily breathingcondition is rapidly changed, and at the same time an alert message maybe sent to the guardian or medical team.

Meanwhile, the first tube 151 c and the fourth tube 151 f are passagesfor sucking foreign materials generated in the patient's bronchus. Thefirst tube 151 c sucks in foreign material that may be formed in theupper portion of the first cuff 151 a while the first cuff 151 a isinflated, and the fourth tube 151 f sucks in foreign material that maybe generated in the upper portion of the second cuff 151 b while thesecond cuff 151 b is inflated with the air from the first cuff 151 awhich is subsequently deflated.

Thus, while the first cuff 151 a or the second cuff 151 b is inflated bythe first tube 151 c and the fourth tube 151 f, foreign materialsgenerated in the bronchus are sequentially sucked.

The saline water of the saline water container 40 a is atomized intofine particles through the first tube 151 c and the fourth tube 151 f onthe foreign materials generated in the body such as saliva, sputum orsolid impurities. When saline water is atomized on the foreign material,fluidity of the foreign material is increased. Therefore, the foreignmaterial is easily sucked in by the suction force applied through thefirst tube 151 c and the fourth tube 151 f.

That is, in the present invention, before the suction device 10 sucksin, saline water is firstly mixed with foreign material through thefirst tube 151 c and the fourth tube 151 f so as to increase thefluidity of the foreign material, and the BLDC motor 30 b drives to suckin the foreign material.

FIG. 8 is an exploded perspective view showing the structure of thesuction device of FIG. 1 as seen from a different direction thereof. Asshown in FIG. 8, in one embodiment of the present invention, the suctiondevice 10 may be additionally provided with a USB terminal 140 and apower switch 130 on the rear thereof.

The USB terminal 140 is connected to an external device such as anotebook or a desktop PC, and is used to transmit a user's dailybreathing condition information to the external device in real time, sothat the external device may store or make statistical analysis on thedaily breathing information.

Meanwhile, the power switch 130 is disposed below the USB terminal 140,and is used to turn on and off the power of the suction device 10.

FIG. 9 is a view showing an example of an operation screen displayed onthe input unit 80 of the suction device of FIG. 1. As shown in FIG. 9,the suction device 10 according to the present invention may beadditionally provided with a nebulizer function that can improve thepulmonary function for improvement of a user's respiratory function.

The nebulizer function is a function for inducing the user's exhalationand inhalation time to be gradually increased. Specifically, forimprovement of patient's respiratory function, the nebulizer 70 is used,or an additional nebulizer may be used by connecting it to the tube unit110 after separating the nebulizer 70.

When using the additional nebulizer, the user may recover to normalconditions from conditions of irregular respiration rate per minute andan abnormally high respiration rate with his or her vital lung capacityimproved.

Meanwhile, referring to FIG. 9, a touch panel type display included inthe input unit 80 may be largely divided into a breathing informationdisplay window 81 and a device setting window 82. The breathinginformation display window 81 displays a respiration rate per minute 81a, single respiratory air volume 81 b and respiration rate per hour 81c. The device setting window 82 is provided with a room temperaturesetting button 82 a, respiration rate step setting buttons 82 b,adjustment buttons 82 c, an operation time setting button 82 d, apressure setting button 82 e, inhalation time setting buttons 82 f,exhalation time setting buttons 82 g, a start button 82 h, and a simplerespiration button 82 i.

The respiration rate per minute 81 a shows a sum of exhalation andinhalation per minute, and the single respiratory air volume 81 b showsthe volume of air breathed out or in during exhalation or inhalation.The respiration rate per minute 81 a and the single respiratory airvolume 81 b are numerical values measurable in a short time of oneminute or less from the user.

The respiration rate per hour 81 c shows a sum of exhalation andinhalation per hour, and is a numerical value for confirming whether thepatient's condition is improving or not.

The room temperature setting button 82 a shows the current roomtemperature of the place where the user uses the suction device 10, andit is an important factor in the case for improving the operating roomor the condition of the user with a weak bronchus.

The respiration rate step setting button 82 b includes a plurality ofbuttons, and the user selects the respiration rate step depending on hisor her respiration rate per minute 81 a. When selecting any one of therespiration rate step setting buttons 82 b, air is injected at a rateequivalent to the half of the user's respiration rate per minute 81 a.

For example, when the user selects 10 as the respiration rate per minuteusing the respiration rate step setting button 82 b, the nebulizerinjects 5 times for one minute. Therefore, the nebulizer injects 5 timesmatching with exhalation for 6 seconds at one time.

Thus, the user is inhaling while air is injected by the nebulizerfunction of the suction device 10, and whenever the respiration ratestep is increased, the exhalation time is gradually increased so as toimprove vital lung capacity, and the irregular and abnormally longrespiration rate per minute may be recovered to normal.

Meanwhile, in one embodiment of the present invention, the number of therespiration rate step setting button 82 b is not limited to three, and aplurality of buttons exceeding three may be provided.

The adjustment button 82 c is a button for inputting the setting ofpressure, time, etc., and the operation time setting button 82 d is abutton for starting the operation of the suction device 10 with thesetting completed.

The operation time setting button 82 d is a button for setting the timeat which the user uses the suction device 10, and the user can input theservice time of the suction device 10 in minutes by using this button

The pressure setting button 82 e is a button for setting the pressure ofair atomized by the respirator of the user, and the user can freely setthe pressure within a predetermined range by using this button.

The inhalation time setting button 82 f is a button for settinginhalation time, which is the time for the user to breathe in, and theuser can set his or her inhalation time in seconds within the range of 1second to 10 seconds by using this button.

The exhalation time setting button 82 g is a button for settingexhalation time, which is the time for the user to breathe out, and theuser can set his or her exhalation time in seconds within the range of 1second to 10 seconds by using this button.

The start button 82 h is a button for the user to start the operation ofthe suction device 10 after completing the setting for operation on thedevice setting window 82.

The simple respiration button 82 i is a button for manual operation whenimproving a user's breathing condition or when a user's breathingcondition is irregular and difficult. However, in the suction device 10according to the present invention, basically the MFM sensor 50 ameasures a user's breathing condition to start simple respiration byartificial intelligence.

Thus, the simple respiration button 82 i is used to increase a user'sinhalation time and improve his or her pulmonary function or during anemergency.

TABLE 1 Respiration rate step Respiration rate per minute (by age)(time/min) Adult(Over 18 yrs) 10 Adolescent(12~18 yrs) 15 Children(5~12yrs) 20 Preschooler(4~5 yrs) 25 Toddler(1~3 yrs) 30 Infants(1 month~1yrs) 40 Newborn(0~1 month) 50

TABLE 2 Flow rate increase step (min) 1 2 3 4 5 6 7 8 9 10 Injection 11.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 time rate Pressure 2.5 2.5 2.5 2.52.5 2.5 2.5 2.5 2.5 2.5 (kg/cm²)

Table 1 shows the respiration rate per minute 81 a in the respirationrate step setting button 82 b divided by age, and Table 2 shows theinjection time rate and pressure according to the flow rate increasesteps.

Data in Table 1 and Table 2 are inputted in the suction device 10according to the present invention as basic information, and thenumerical values listed in Table 1 and Table 2 may be freely changed bythe user through the input unit 80.

Referring to Table 1, the respiration rate step setting button 82 b isdivided by age and has a different respiration rate per minute 81 arespectively according to each age group.

Referring to Table 2, as the flow rate increase step, a plurality ofsteps may be provided, and different times are set in minutes betweenthe flow rate increase steps.

The respiration rate per minute 81 a shows the sum of inhalation andexhalation made within one minute, and a flow rate increase step meansthe step at which the injection time rate proceeds to the next rate, andit is possible to set from the minute unit to hour unit.

An injection time rate shows the rate of time at which the nebulizer 70atomizes during inhalation. For example, when the user selects Adult bythe respiration rate step setting button 82 b and sets 1 minute for thetime of the flow rate increase step, the times of inhalation becomes 5if the respiration rate per minute 81 a is 10 times.

Therefore, the time of one inhalation becomes 6 seconds. At this time,the flow rate increase step begins at step 1, and it takes 1 minute,which was set, to proceed from step 1 to step 2. The injection time rateat step 1 is 1, and if the injection time rate is 1, the nebulizer 70atomizes for 6 seconds of inhalation time.

As 1 minute has passed and proceeds to step 2, the injection time rateis changed to 1.1, so that the nebulizer 70 atomizes for 6.6 seconds ofinhalation time. When another 1 minute has passed and proceeds to step3, the injection time rate is changed to 1.2, so that the time ofinhalation, that is, the injection time of air increases to 7.2 seconds.

Thus, the injection time of air increases step by step at the injectiontime rate depending on the injection time rate, and the user issubjected to the injection time of air that is increased by using thesuction device 10 for hours or days so as to increase the time ofinhalation naturally.

The function of inducing the inhalation time to increase may be appliedto various types of suction devices in addition to the suction device10.

Further, without limitation to the suction device 10, the technicalconfiguration of the present invention may be applied to products forincreasing vital lung capacity, and may be used as well by lung cancerpatients, athletes, rhinitis patients, users who want to improvehypogastric breathing or abdominal breathing, melancholiacs andpsychiatric patients.

For lung cancer patients, it is possible to partially improve thepulmonary function in which normal breathing is possible, and facilitateblood circulation to help with the treatment of lung cancer.

According to the present invention, athletes may train his or herpulmonary function by daytime exercise and also through the function ofinducing the suction device 10 to increase the inhalation time evenduring sleep.

There is an effect of self-treatment for rhinitis patients bycultivating immunity through the function of inducing the increase ofinhalation time and facilitating the blood circulation of the whole bodyand nose.

For the users who train hypogastric breathing or abdominal breathing,the effects are increased by improving pulmonary function and inducingabdominal breathing even during sleep through the function of inducingthe increase of inhalation time.

Also, for students and office workers who need improved concentration,there are good effects that pulmonary function is improved and bloodcirculation is facilitated by the function of increasing the inhalationtime so as to be helpful for not only concentration on study but alsotheir health.

For psychiatric patients, stabilized breathing may improve the bloodcirculation of the brain and improve their physical condition.Therefore, physical stability induces mental stability, so that there isan effect of reducing the anxiety or depression of psychiatric patients.

Meanwhile, in one embodiment of the present invention, independently ofthe operation according to the values detected by the sensor unit 50 (aso-called automatic operation mode), it may also be set in such a mannerthat the movement into the bronchus of the tube unit according to apredetermined time cycle (for example, 1 hour) as set by anadministrator such as a doctor through the input unit 80 in FIG. 8, andthe foreign material sucking process through the suction pressureincrease of the tube unit may be concurrently and repeatedly executed (aso-called semi-automatic operation mode).

According to the above-described configuration, even when a detectionerror has occurred in the sensor unit 50, automatic suction of foreignmaterial according to a predetermined time cycle is executed, so thatthe patient may be prevented from encountering a dangerous situation.

FIG. 10 is an exploded perspective view showing a second storage unit 11formed in the lower part of the suction device 10 of FIG. 1.

Referring to FIG. 10, the second storage unit 11 includes a suctioncontainer 11 a, a thermal printer 11 b, a saline water container 11 c, apower supply 11 d, and a motor 11 e.

Referring to FIG. 1 and FIG. 10, the suction container 11 a is filledwith waste if the suction container 40 b of FIG. 1 has no space to fillwaste in. The saline water container 11 c is also used as a storagecontainer for filling saline water again in the saline water container40 a, when all of the saline water of the saline water container 40 a ofFIG. 1 has been used.

Therefore, the suction container 11 a and the saline water container 11c have an advantage that they may be used if there are many users and itis difficult to manage from time to time.

The thermal printer 11 b may be provided between the suction container11 a and the saline water container 11 c to print a service record,patient's breathing condition, operation time, and breathing informationwithin a predetermined period in which the suction device 10 was used.

Therefore, it is possible to confirm the present condition of thepatient using the device by analyzing the information printed out andadequately treat the patient.

The power supply 11 d is disposed below the thermal printer 11 b tosupply power to the motor 11 e. The motor 11 e is provided below thepower supply 11 d, and the motor 11 e is driven for pumping to movewaste to the suction container 11 a or move the saline water in thesaline water container 11 c to the saline water container 40 a.

For the suction device 10 whose frequency of use is high and which isused in hospital or at home, it is preferable to additionally providethe second storage unit 11 as described above.

FIG. 11 is a block diagram showing a method of operating the suctiondevice of FIG. 1.

The power supply 11 d supplies power to the control unit 120 and thedriver 30 a (S101), and the MFM sensor 50 a transmits to the controlunit 120 the measured values for information on the mass of user'sexhaled gas or daily breathing condition such as flow rate (S102).

Meanwhile, the control unit 120 analyzes the values measured by the MFMsensor 50 a. If it is determined that foreign material is generated outof the daily breathing condition, the control unit 120 transmits a drivesignal to the driver 30 a (S103).

The driver 30 a receives the drive signal from the control unit 120, andsends it to the BLDC motor 30 b (S104). The BLDC motor 30 b is driven bythe signal received from the driver 30 a, and at this time, outside airis supplied to the BLDC motor 30 b through a moisture filter (S105).

Meanwhile, the catheter 113 a moves through the catheter reel 113 to beinserted into the user's bronchus through the T tube 151 at a low speed,and is placed in the user's bronchus (S106). Herein, in order toincrease the fluidity of foreign material before sucking it in throughthe catheter reel 113, the first solenoid valve 30 c connected to thesaline water container 40 a is opened (S107).

Meanwhile, a small motor connected to the saline water container 40 a isdriven to suck saline water in the saline water container 40 a (S108),and the saline water in the saline water container 40 a passes throughthe first solenoid valve 30 c and flows to the user's bronchus throughthe fourth tube 151 f to increase the fluidity of the foreign materials.

Meanwhile, if it is determined that the weight of the saline water inthe saline water container 40 a is less than a predetermined referencevalue, the scale 100 provided below the saline water container 40 atransmits the underweight signal representing the underweight of thesaline water to the control unit 120 (S109).

When the first solenoid valve 30 c is closed, the third solenoid valve30 c connected to the third tube 151 e is also closed (S110), therebythe fluidity of foreign material is increased, and then the secondsolenoid valve 30 c connected to the BLDC motor 30 b through the fourthtube 151 f is opened (S111).

Then, the second solenoid valve 30 c is opened, so that foreignmaterials pass through the fourth tube 151 f and the second solenoidvalve 30 c to be sucked at a predetermined pressure.

Meanwhile, the scale 100 provided below the suction container 11 ameasures the weight of foreign material. If it is determined that theweight of the foreign material exceeds the predetermined referencevalue, the scale 100 transmits the overweight signal representing theoverweight of the foreign material to the control unit 120 (S112).

When foreign materials are sucked at a predetermined pressure, thesecond solenoid valve 30 c is closed, and the third solenoid valve 30 cis opened, and thereby the patient maintains the breathing condition.Meanwhile, the MFM sensor 50 a measures the daily breathing condition ofthe user at all times (S113).

When foreign material is sucked through the catheter 113 a andcompletely flows into the suction container 11 a, the catheter reel 113is driven to pull the catheter 113 a. When the catheter 113 a isdischarged from the bronchus of the user, the inside and outside of thecatheter 113 a are cleaned by saline water (S114).

Meanwhile, since the BLDC motor 30 b used in the present invention can,unlike the conventional AC motor, have the pressure, flow rate (NL/m)and the drive cycle of motor desired by the user changed easily throughan increase and decrease of electric current, in the suction device 10,air injection is possible only for a user's inhalation withoutcontinuing air injection during a user's exhalation.

Further, since the BLDC motor 30 b used in the present invention hasexcellent heat resistance with less noise, and does not generate an arcwhen it is turned on/off, its motor life is three times longer than theconventional AC motor, and may be made smaller with comparableperformance, thereby it is suitable for use in a portable suction deviceand is stable.

Meanwhile, if the user has an inhalation time increased by using thesuction device according to the present invention for several days, theuser naturally comes to have a habit of abdominal respiration or a habitof long inhalation or exhalation. Thus, as the time of inhalation isincreased, the user can gain the effects of blood circulationimprovement and vital lung capacity improvement.

In addition, the present invention can induce natural respiration alsofor patients or infants whose pulmonary function is not good due to theaftereffects following surgery.

Further, since the catheter reel 113 of the present invention does notreside in the bronchus, it has an advantage that the inconvenience thatthe catheter 113 a should be installed in the bronchus constantly isgreatly reduced.

The suction device according to the present invention in which automaticsuction and catheter insertion are possible may be used in mosthospitals and homes for patients who need a guardian's help, therebyhaving industrial applicability.

While the present invention has been described with reference to thepreferred embodiments, it will be understood by those skilled in therelated art that various modifications and variations may be madetherein without departing from the scope of the present invention asdefined by the appended claims.

What is claimed is:
 1. A suction device comprising: a drive unitconfigured to periodically pump; an input unit configured to inputsetting values for control; a sensor unit configured to measure abreathing condition of a patient; a tube unit configured to be insertedinto a bronchus of a patient to suck foreign material generated in thebronchus, wherein the tube unit has a length that permits movementwithin the bronchus; wherein the tube unit comprises a first cuffconfigured to be positioned in the bronchus, to be inflated to expandthe bronchus, and to be deflated; a second cuff configured to bepositioned adjacent to and below the first cuff in the bronchus, to beinflated to expand the bronchus, and to be deflated; wherein the firstcuff and second cuff are each alternately inflated and deflated at apredetermined interval of time in the bronchus such that the first cuffis inflated when the second cuff is deflated and such that the firstcuff is deflated when the second cuff is inflated; and a control unitconfigured to receive the setting values and the measured resultsrespectively transmitted from the input unit and the sensor unit andcontrol the drive unit based on the received setting values and measuredresults.
 2. The suction device of claim 1, wherein the drive unitincludes a brushless DC motor (BLDC motor) that sucks and injects air byperiodical pumping, and a driver that is connected to the BLDC motor ata distance and receives a control signal transmitted from the controlunit to control the BLDC motor.
 3. The suction device of claim 1,wherein the input unit includes: a breathing information display windowin which a user's respiration rate per minute, a single respiratory airvolume showing a volume breathed by a user at one time and breathinginformation showing respiration rate per hour are displayed; and adevice setting window in which setting buttons for operating arespiratory function and suction are provided.
 4. The suction device ofclaim 1, wherein the sensor unit includes: a mass flow meter (MFMsensor) configured to detect a daily breathing condition showing apatient's breathing pattern and a volume of exhaled gas for apredetermined time, transmit the detected results to the control unit,measure a mass of a patient's exhaled gas and the daily breathingcondition to obtain measured results, and transmit the measured resultsof the daily breathing condition to the control unit.
 5. The suctiondevice of claim 4, wherein the control unit is configured to analyze thedaily breathing condition received from the MFM sensor, and if it isdetermined that foreign material is generated in the body of thepatient, control the drive unit to suck the foreign material, andanalyze the daily breathing condition received from the MFM sensor, andif it is determined that the user's breathing condition is irregular anddifficult, control the drive unit to assist with the user's respiratoryfunction.
 6. The suction device of claim 4, wherein the tube unitincludes: a catheter reel and a tube cover, wherein the catheter reelcomprises: a catheter that has a tube structure configured to beinserted into the bronchus to suck foreign material generated in thebronchus, wherein the catheter has a length that permits movement withinthe bronchus; a screw frame that includes a plurality of protrudedthreads formed on an outer circumference thereof on which the catheteris reeled, and is configured to push or pull the catheter, within thebronchus, depending on the rotation direction thereof; a catheter reelcase that includes a plurality of holes to receive saline water forcleaning the catheter surface, and wherein the catheter reel case housesthe catheter and the screw frame; and a stepping motor configured torotate the screw frame to move the catheter within the bronchus, whereinthe tube cover is outside of the catheter so that the catheter providespassages that are connected to a filter, the MFM sensor, a saline watercontainer, and a nebulizer between the bronchus and catheter reel. 7.The suction device of claim 2, further comprising: a motor cover thatencloses the BLDC motor to prevent a noise of the BLDC motor from beingleaked to outside of the suction device and reduce a vibration of theBLDC motor.
 8. The suction device of claim 1, wherein the tube unitfurther includes: a T tube, wherein the T tube includes: the first cuff;the second cuff; a first tube; a second tube; a third tube; and a fourthtube; wherein the third tube is connected to the first cuff to enableair to flow into and out of the first cuff to inflate and deflate thefirst cuff; wherein the second tube is connected to the second cuff toenable air to flow into and out of the second cuff to inflate anddeflate the second cuff; wherein the first tube sucks foreign materialformed above the first cuff when the first cuff is inflated; and whereinthe fourth tube sucks foreign material formed above the second cuff whenthe first cuff is deflated and the second cuff is inflated.
 9. Thesuction device of claim 1, further comprising a storage unit which sucksand stores foreign material and stores and supplies saline water. 10.The suction device of claim 1, further comprising: a filter thatprevents moisture from penetrating into the sensor unit, and waste fromentering into the drive unit.
 11. The suction device of claim 1, whereinthe control unit is configured to analyze the daily breathing conditionreceived from the MFM sensor, and if it is determined that foreignmaterial is generated in the body of the patient, control the drive unitto suck the foreign material, and analyze the daily breathing conditionreceived from the MFM sensor, and if it is determined that the user'sbreathing condition is irregular and difficult, control the drive unitto assist with the user's respiratory function.
 12. A suction devicecomprising: a drive unit configured to periodically pump; an input unitconfigured to input setting values for control; a sensor unit configuredto measure a breathing condition of a patient; a control unit configuredto receive the setting values and the measured results respectivelytransmitted from the input unit and the sensor unit and control thedrive unit based on the received setting values and measured results; atube unit comprising a T tube, wherein the T tube comprises a first cuffconfigured to be positioned in the bronchus, to be inflated to expandthe bronchus, and to be deflated; a second cuff configured to bepositioned adjacent to and below the first cuff in the bronchus, to beinflated to expand the bronchus, and to be deflated; wherein when thefirst cuff and second cuff are each alternately inflated and deflated ata predetermined interval of time in the bronchus such that the firstcuff is inflated when the second cuff is deflated and such that thefirst cuff is deflated when the second cuff is inflated; a first tube; asecond tube; a third tube; and a fourth tube; wherein the third tube isconnected to the first cuff to inflate and deflate the first cuff;wherein the second tube is connected to the second cuff to inflate anddeflate the second cuff; wherein the first tube sucks foreign materialformed above the first cuff, when the first cuff is inflated, to movethe foreign material out of the bronchus; and wherein the fourth tubesucks foreign material formed above the second cuff, when the first cuffis deflated and the second cuff is inflated, to move the foreignmaterial out of the bronchus.
 13. The suction device of claim 12,wherein the drive unit includes a brushless DC motor (BLDC motor) thatsucks and injects air by periodical pumping, and a driver that isconnected to the BLDC motor at a distance and receives a control signaltransmitted from the control unit to control the BLDC motor.
 14. Thesuction device of claim 12, wherein the input unit includes: a breathinginformation display window in which a user's respiration rate perminute, a single respiratory air volume showing a volume breathed by auser at one time and breathing information showing respiration rate perhour are displayed; and a device setting window in which setting buttonsfor operating a respiratory function and suction are provided.
 15. Thesuction device of claim 12, wherein the sensor unit includes: a massflow meter (MFM sensor) that is configured to detect a daily breathingcondition showing a patient's breathing pattern and a volume of exhaledgas for a predetermined time, transmit the detected results to thecontrol unit, measure a mass of a patient's exhaled gas and the dailybreathing condition to obtain measured results, and transmit themeasured results of the daily breathing condition to the control unit.16. A suction device comprising: a drive unit configured to periodicallypump; an input unit configured to input setting values for control; asensor unit configured to measure a breathing condition of a patient; acontrol unit configured to receive the setting values and the measuredresults respectively transmitted from the input unit and the sensor unitand control the drive unit based on the received setting values andmeasured results; a tube unit comprising a catheter reel and a tubecover, wherein the catheter reel comprises: a catheter that has a tubestructure configured to be inserted into a bronchus of a patient to suckforeign material generated in the bronchus, wherein the catheter has alength that permits movement within the bronchus; a screw frameconfigured to push or pull the catheter, within the bronchus, dependingon the rotation direction thereof; a catheter reel case that includes aplurality of holes to receive saline water for cleaning the cathetersurface, and wherein the catheter reel case houses the catheter and thescrew frame; and a stepping motor configured to rotate the screw frameto move the catheter within the bronchus; wherein the tube cover isoutside of the catheter so that the catheter provides passages that areconnected to a saline water container and a nebulizer between thebronchus and the catheter reel.
 17. The suction device of claim 16,wherein the tube unit further comprises a first cuff configured to bepositioned in the bronchus, to be inflated to expand the bronchus, andto be deflated; a second cuff configured to be positioned adjacent toand below the first cuff in the bronchus, to be inflated to expand thebronchus, and to be deflated; wherein when the first cuff and secondcuff are each alternately inflated and deflated at a predeterminedinterval of time in the bronchus such that the first cuff is inflatedwhen the second cuff is deflated and such that the first cuff isdeflated when the second cuff is inflated.
 18. The suction device ofclaim 17, wherein the tube unit comprises a T tube, wherein the T tubecomprises a first tube; a second tube; a third tube; and a fourth tube;wherein the third tube is connected to the first cuff to inflate anddeflate the first cuff; wherein the second tube is connected to thesecond cuff to inflate and deflate the second cuff; wherein the firsttube sucks foreign material formed above the first cuff, when the firstcuff is inflated, to move the foreign material out of the bronchus; andwherein the fourth tube sucks foreign material formed above the secondcuff, when the first cuff is deflated and the second cuff is inflated,to move the foreign material out of the bronchus.
 19. The suction deviceof claim 16, further comprising a storage unit that sucks and storesforeign material and stores and supplies saline water.
 20. The suctiondevice of claim 16, wherein the drive unit includes a brushless DC motor(BLDC motor) that sucks and injects air by periodical pumping, and adriver that is connected to the BLDC motor at a distance and receives acontrol signal transmitted from the control unit to control the BLDCmotor.
 21. The suction device of claim 16, wherein the input unitincludes: a breathing information display window in which a user'srespiration rate per minute, a single respiratory air volume showing avolume breathed by a user at one time and breathing information showingrespiration rate per hour are displayed; and a device setting window inwhich setting buttons for operating a respiratory function and suctionare provided.
 22. The suction device of claim 16, wherein the sensorunit includes: a mass flow meter (MFM sensor) that is configured todetect a daily breathing condition showing a patient's breathing patternand a volume of exhaled gas for a predetermined time, transmit thedetected results to the control unit, measure a mass of a patient'sexhaled gas and the daily breathing condition to obtain measuredresults, and transmit the measured results of the daily breathingcondition to the control unit.
 23. The suction device of claim 22,wherein the control unit is configured to analyze the daily breathingcondition received from the MFM sensor, and if it is determined thatforeign material is generated in the body of the patient, control thedrive unit to suck the foreign material, and analyze the daily breathingcondition received from the MFM sensor, and if it is determined that theuser's breathing condition is irregular and difficult, control the driveunit to assist with the user's respiratory function.